It seems very strange that on iOS, any app could cause you to go to searching & no service as apps won't have this level of permission on the platform.
I don't doubt that people have had their share of HW problems from reading the thread, but at someone who was an early and voacl participant in the thread, I will tell you that 99% of my problems these days are because VZW's LTE network in MA/NYC is terrible and not because of the iPhone 5. Early on I had some SW bugs with not properly switching back to LTE with 6.0.x, but these have been resolved in the 6.1.x versions of SW.
I have spent months and months now with both an iPhone 5 and a Galaxy S3 on both VZW and AT&T and there is no noticable difference between the terrible LTE service and coverage caps on the iPhone 5/GS3 VZW while AT&T has strong LTE is almost all of these terrible locations and their speed is far about (both download and upload) what VZW gives me anywhere. Unless VZW goes through some amazing LTE-network transformation filling in dozens/hundreds of cell tower gaps between now and when my contract expires next year, I will not be sticking with VZW for my primary phones anymore.